Shuttle embroidering machine

ABSTRACT

An embroidering machine having a plurality of reciprocable needle bars and a rail for actuating the needle bars. Each needle bar carries a pawl for coupling it to the rail and a control shaft engaging the pawls has depressions arranged thereon for controlling the pawls when the control shaft is turned. The turning of the control shaft may be programmed in any suitable manner and, furthermore, the control shaft can be exchanged for another having a different pattern of pawl controlling depressions.

Unite States Patent Rolaufis et al.

[451 Oct. 3, 1972 [54] SHUTTLE EMBROIDERING MACHINE [72] Inventors: HansRolauffs; Hubert Hoven; Hans Hippel; Max Schafer, all of Krefeld,

Germany [73] Assignee: Maschinenfabrik Carl fangs Aktiengesellschaft,Krefeld, Germany [22] Filed: Oct. 15, 1970 [21] Appl. No.: 81,022

[30] Foreign Application Priority Data Oct. 17, 1969 Germany ..P 19 52307.0

June 5, 1970 Germany ..P 20 27 630.6

[52] US. Cl. ..112/22l, 112/79, 112/255 [51] Int. Cl. ..D05b 55/14 [58]Field of Search ..1 12/221, 79R, 254, 255

[56] References Cited UNITED STATES PATENTS 1,984,331 12/1934 Boyce"112/221 2,989,014 6/1961 Dedmon ..1 12/221 X 3,162,155 12/1964 Charles..1 12/221 X 3,115,856 12/1963 Card ..l12/255 X 3,084,644 4/1963 Card..1 12/254 X Primary Examiner-H. Hampton Hunter Attomey-Walter BeckerABSTRACT An embroidering machine having a plurality of reciprocableneedle bars and a rail for actuating the needle bars. Each needle barcarries a pawl for coupling it to the rail and a control shaft engagingthe pawls has depressions arranged thereon for controlling the pawlswhen the control shaft is turned. The turning of the control shaft maybe programmed in any suitable manner and, furthermore, the control shaftcan be exchanged for another having a different pattern of pawlcontrolling depressions.

1 1 Claims, 10 Drawing Figures PATENTEDnms m2 3.695.199 sum 2 or 5 Fig.2

INVENTOKS PATENTEDnma 1912 3,695,199

INVENTORS SHUTTLE EMBROIDERING MACHINE The present invention relates toa shuttle embroidering machine with needle bars which are independent ofeach other and individually mounted and guided on needle carriers andwhich are adapted in conformity with a program either to be coupled toan oscillating driving rail or to be disengaged therefrom.

Shuttle embroidering machines of this type have become known in variousforms. In view of the fact that any desired individual needles aredisconnectable, a great number of variations are possible for the repeatmechanism in connection with muIti-color embroideries. Although whenchanging the yarn color, the needles embroidering the color used up tothat time have to be put out of operation and the needles with a newcolor have to be put into operation whereby the fabric area to beprocessed has sometimes to be moved to the place of the new workingneedles, this type of changing the respective operating needles has theadvantage that by means of technically simple construction numerouspossibilities of variation for the repeat mechanism and the colorselection are created.

With furthermore heretofore known embroidering machines in which theyarn color change is effected by rethreading the working needles, thestructural steps for rethreading of each needle are so awkward thatheretofore no technical solution has been found which meets the hardcontinuous stresses encountered in practice. Also, the suggestion toprovide rotatable turretheads with a plurality of needles on the needlecarrier, which needles respectively have threaded therein different yarncolors and of which one needle only occupies an embroidery position hasnot resulted in a practically feasible solution.

Starting with a shuttle embroidering machine with needle bars mountedand guided independently of each other, it is an object of the presentinvention to provide a simple and operatively reliable construction forcoupling the individual needle bars to the driving rail or to disconnectthe needles while the needles may selectively in conformity with theprogram be moved into their working or rest position and the program maybe variable and easily exchangeable.

These objects and advantages of the invention will appear more clearlyfrom the following specification, in connection with the accompanyingdrawings, in which:

FIG. 1 is a top view of a portion of the needle carrier of the firstembodiment of the shuttle embroidering machine according to the presentinvention.

FIG. 2 represents a cross section through the needle carrier, saidsection being taken along the line "-11 of FIG. 1.

FIG. 3 is a cutout of the cross section according to FIG. 2 and showsone needle bar in its working positron.

FIG. 4 is a section similar to that of FIG. 3, according to which aneedle bar is in its disengaged position, FIG. 4 showing a longitudinalsection through a device for manually effecting the disengagement.

FIG. 5 shows a section similar to that of FIG. 3, according to which theneedle bar can be disengaged by means of a control rod which is manuallyoperable.

FIG. 6 is a front view of two thread guiding rollers respectivelyjournalled on two levers.

FIG. 7 is a side view of a lever with a shiftable shaft shown in crosssection and with a braking roller, the thread guiding roller occupyingits working position.

FIG. 8 is a side view similar to that of FIG. 7 with the thread guidingroller occupying its rest position.

FIG. 9 is'a top view of a portion of the needle carrier of a secondembodiment of a shuttle embroidering machine according to the invention.

FIG. 10 illustrates on a somewhat larger scale than the precedingfigures, a magnet mounted on the guiding bar.

The shuttle embroidering machine according to the invention ischaracterized primarily in that each needle bar is adapted to be coupledto the driving rail by means of a pawl journalled on the needle bar,which pawl is adapted to be controlled by a control shaft which isstationarily mounted and rotatable as well as exchangeable. To this end,the control shaft has its mantle surface according to the inventionprovided with elevations and depressions which are arranged in aplurality of rows corresponding to the angle of rotation of the controlshaft between two positions while a control ann cooperates with saidelevations and depressions. This control arm may be designed as atwo-arm lever or two-arm pawl.

According to a further feature of the invention, it is suggested toarrest the needle bar in its disengaged position by means of a leafspring mounted on the needle carrier. A portion of the pawl, when inlifted position, which corresponds to the disengaging position of theneedle bar engages said leaf spring under pressure. In this way, anunintentional or accidental movement of the needle bar is prevented in asimple manner.

The arresting of each needle bar in its disengaged position may,according to another embodiment of the invention, be effected by amagnet arranged at the end of a guiding bar for the pawl carrier andholding the latter fast. With this embodiment, there will be no Ydangerof a soiling of the leaf spring whereby the clamping pressure could beeliminated. Finally, with this embodiment also the control shaft will berelieved of clamping forces which, with the embodiment employing a leafspring, are exerted by the control shaft through the pawls upon the leafsprings of the disengaged needle bars.

Accordingto still another feature of the invention, the magnet may bedesigned as a permanent annular magnet which, advantageously, isprovided with a threaded portion and by means of a counter nut asabutment for limiting the movement of the needle bar is thus adjustablyconnected to the guiding bar.

The present invention furthermore suggests that each needle bar is madeindividually and manually disengageable independently of the programdetermined by the design and the position of the control shaft. To thisend, according to a preferred embodiment of the invention, each needlebar has associated therewith a control rod which acts upon the pawl andwhich is axially displaceable in a sleeve against the thrust of apressure spring and is provided with a pivotable lever which is adaptedto arrest the control rod in two different directions. This possibilityof individually disengaging each needle has the advantage that disordersoccurring on one individual needle, for instance, a thread break, can beremedied without stopping the entire embroidering machine.

Starting with a shuttle embroidering machine with thread guiding rollersrespectively associated with said needles, which are journalled on alever for pivoted movement between a working position and a restposition and which in their working position cooperate with a brakeroller, it is suggested, according to the invention that the leversrespectively carrying a thread guiding roller are equipped with acontrol arm which cooperates with a shiftable shaft which isstationarily and rotatably journalled and is exchangeable, saidshiftable shaft being designed in conformity with the control shaft forthe needle bars and being adapted to be driven. With this last mentioneddesign, the advantages of the control shaft according to the inventionalso apply to the control of the thread guiding rollers. Inasmuch as theshiftable shaft for the thread guiding rollers corresponds to thecontrol shaft for the needle bars, a great simplification has beenrealized, not only with regard to the control and shifting meanscomprising the program, but also with regard to the drive therefor.

Referring now to the drawings in detail, FIG. 2 illustrates only a frontframe portion 1 of the embroidering machine according to the invention.By means of supports 2, a needle carrier 3 is connected to the frameportion 1 of which a portion is shown in top view in FIG. 1. Hearingblocks 4 are screwed onto the needle carrier 3 while in said bearingblocks 4 there are respectively journalled and guided needle bars 5 witheach needle bar being independently journalled and guided from the otherneedle bars. The front end of the needle bar 5 has a needle 6 connectedthereto by means of a clamping head 7. The bearing block 4 furthermorehas mounted thereon a guiding rod 8 which extends parallel to the needlebar 5 and on which a pawl carrier 9 is guided in longitudinal direction,said pawl carrier 9 being connected to the other end of the needle bar5. The pawl carrier 9 serves for journalling a pawl 10 which is in theform of a two-arm lever and which has one lever arm forming a pawl armdesignated with the reference numeral 10;: while the other lever armforms the control arm 10b. The pawl 10 when occupying its normalposition is, by means of a pawl spring 10c, pressed against an abutmentpin 9a on the pawl carrier 9 as shown in FIG. 3.

For purposes of driving the needle bars 5 which carry the needles 6,there is provided a driving rail 11 which extends over the entire widthof the embroidering machine and which carries out an oscillatingmovement. This driving rail 11 is, in conformity with FIG. 2, connectedto holding members 15 by means of a clamping strip 12. The said holdingmembers 15 are respectively mounted on driving bars 14. The driving bars14 are journalled in supporting members 13 and convey the oscillatingmovement from a non-illustrated driving member to the driving rail 11.

The coupling of the needle bars 5 to the driving rail 11 is effected bypawls 10 which, by means of their pawl arm 10a (FIG. 3) couple the pawlcarrier 9 and thereby the needle bar 5 to the driving rail 11. In orderto be able to disengage each individual needle bar 5 from thereciprocating driving rail 11, the frame of the embroidering machine hasa control shaft 17 journalled thereon in stationarily located bearings16. The pawls 10 are adapted in the rear position of the driving rail 11(FIGS. 3 and 4) to be controlled by the control shaft 17 and, morespecifically, by a cooperation of the control arms 10b of pawls 10 withthe surface of the control shaft 17. According to the illustratedembodiment, the control shaft has its mantle surface provided withdepressions 17a. When the control arm 10b of a pawl 10 in the rearposition of the driving rail 11 engages such depressions 17a (FIG. 3),the pawl 10 will in no way be affected. The needle bar 5 will, asbefore, be further taken along by the driving rail 11. .If, however, thecontrol arm 10b of the pawl 10 in the rear end position of the drivingrail 11 (FIG. 4) engages a smooth portion of the mantle surface of thecontrol shaft 17, the pawl arm 10a of pawl 10 is lifted off from thedriving rail 11. The needle bar 5 will thus during the next forwardmovement of the driving rail 11 remain in its rear position, i.e., inits disengaged position.

The depressions 17a are, according to the repeat mechanism and theselection of the needles 6 having differently dyed threads threadedtherein, arranged in a plurality of rows on the mantle surface of thecontrol shaft 17. The angle of rotation of control shaft 17 may amountfor instance to 36, so that this control shaft 17 comprises 10 differentpossibilities for controlling the needles 6. For purposes of changingthe repeat mechanism andlor the yarn colors, the control shaft 17 isturned about one or more control steps by driving means, not shown inthe drawing. In addition thereto, it is also possible to exchange thecontrol shaft 17 for another control shaft in a simple manner so thatthe number of possible variations is further increased. Of course, ifdesired, instead of depressions 17a, also elevations may be arranged oncontrol shaft 17 which can be produced in any desired manner.

In order to secure the needle bars 5 in their disengaged positionagainst an accidental displacement thereof, each bearing block 4 of thefirst embodiment has connected thereto a leaf spring 18 which extendsthrough a recess in the pawl carrier 9. As soon as the control arm 10bof the pawl 10 is depressed by the control shaft 17 (FIG. 4), the liftedpawl arm will under pressure be placed against the leaf spring 18 whichlatter in this way will be deformed and will prevent a movement of theneedle bar 5 relative to the bearing block 4.

In order to make sure that with a disorder on an individual needle 6,brought about, for instance, by a thread break, this needle canindependently of the embroidering program be disengaged, the cover plate19 which covers the bearing blocks 4 is provided with disengagingdevices which are manually operable. Each disengaging device, accordingto the illustrated embodiment, comprises a sleeve 20 connected to thecover plate 19 by a guiding nut 22, a control rod 21 being guided insleeve 20. This control rod 21, when occupying its lower position,presses upon the control arm 10b of the pawl 10 so that the latter inspite of the presence of a depression 17a in control shaft 17 (FIG. 5)is lifted, whereby the needle bar 5 is separated or disengaged from thedriving rail 1 1.

One possibility for the structural design of the disengaging device isshown in FIGS. 3 5. As will be seen therefrom, the control rod 21,equipped with a pivotable lever 21a, is moved in the upper and lowerengaging position. The respective position of the control rod 21 issecured by a pressure spring 23 which is located between sleeve 20 andthe pivotable lever 21a of control rod 21 (FIG. 4).

In order to be able also with the thread guiding means associated witheach needle 6 to take advantage of the advantages of the above describedcontrol for the coupling of the individual needle bars with thereciprocating driving rail 11, these members have associated therewith ashiftable shaft 27 which corresponds to the control shaft 17.

According to the embodiment illustrated in FIGS. 6 8, each threadguiding roller 29 is rotatably journalled on a lever 24 which, in itsturn, is pivotally mounted on a bearing member 26. The bearing members26 are screwed in side-by-side arrangement onto a stationary supportingrail 25.

When the thread guiding rollers 29 occupy their working position shownin FIG. 7, the rollers 29 engage a brake roller 30 which extends overthe entire width of the embroidering machine. When a needle 6 isdisengaged, also the thread guiding roller 29 has to be lifted off thebrake roller 30 in order to interrupt the thread supply. This positionis shown in FIG. 8.

In order to be able to control the levers 24 in conformity with theworking rhythm of the pertaining needle 6, which levers 24 respectivelycarry thread guiding rollers 29, each lever 24 is provided with acontrol arm 24a which cooperates with the control shaft 27 extendingparallel to the brake roller 30. The shiftable or control shaft 27 is,in conformity with the control shaft 17, provided with depressions 27ainto which one end of the control arms 24a drops when the pertaininglever 24 is to be brought into working position in which the threadguiding roller 29 engages the rotating brake roller 30. In order toassure this engagement, the lever 24 is spring loaded by a lever spring28.

Also, the control shaft 27 may be exchanged in a simple manner foranother control shaft so that there always exists the possibility ofinserting corresponding control shafts 17 and control shafts 27 into theembroidering machine, which shafts will be controlled by the same driveat the same rhythm and as to the same angle of rotation.

The second embodiment of FIGS. 9 and 10, differs from the firstembodiment primarily only with regard to the arresting device for thedisengaged needle bars. All other parts are the same and therefore aredesignated with the same reference numerals.

In order to prevent the needle bars 5 of the second embodiment whenoccupying their disengaged position from an accidental displacement, theend of each guiding bar 8 has connected thereto a magnet 31 whichcontinuously tends to retain the pawl carrier 9 in its rear position.According to FIG. this magnet 31 forms a permanent annular magnet whichis placed upon the guiding rod 8. Soldered to the magnet 31 is a nut 32which, together with a counter nut 33, permits an adjustment of themagnet 31 on guiding rod 8 provided with a threaded member so that themagnet 31 can simultaneously serve as abutment for limiting the movementof the needle bar 5.

It is, of course, to be understood that the present invention is, by nomeans, limited to the particular showing in the drawings, but alsocomprises any modifications within the scope of the appended claims.

What is claimed is:

I. In a shuttle embroidering machine; a plurality of needle barsreciprocable between retracted and working positions, a needle carriersupporting said needle bars independently of each other, a driving railfor driving said needle bars, a pawl carried by each needle bar having afirst position wherein the respective needle bar is coupled to saiddriving rail for reciprocation thereby and a second position wherein therespective needle bar is disengaged from said driving rail while inretracted position, and means for moving said pawls into and out ofengagement with said driving rail including a control shaft in themachine in engagement with said pawls for directly controlling the pawl.on each needle bar, said control shaft being rotatable and having meansfor controlling movement of said pawls into engagement with said drivingrail for effecting said control.

2. A shuttle embroidering machine according to claim 1 in which saidcontrol shaft has depression means formed therein at differing angles ofrotation for each said pawl, and each said pawl comprises a control armengaging said control shaft in the radial plane of the shaft containingthe depression means pertaining thereto.

3. A shuttle embroidering machine according to claim 9 which includes aleaf spring adjacent each needle bar and spaced from the bar when thepertaining pawl is in the said first position thereof and adapted to bemoved into position to direct the respective needle bar, said pawl whenmoved to its said second position engaging said leaf spring and movingit to needle bar arresting position.

4. A shuttle embroidering machine according to claim 9 which includes amagnet for each needle bar, each magnet being positioned to hold therespective needle bar in retracted position when the pawl pertainingthereto is in the said second position thereof.

5. A shuttle embroidering machine according to claim 4 in which saidmagnet is an annular permanent magnet.

6. In a shuttle embroidering machine; a plurality of needle barsreciprocable between retracted and working positions, a needle carriersupporting said needle bars independently of each other; a driving railfor driving said needle bars, a pawl on each needle bar having a firstposition wherein the respective needle bar is coupled to said drivingrail for reciprocation thereby and a second position wherein therespective needle bar is disengaged from said driving rail while inretracted position, a control shaft in the machine for controlling saidpawls, said control shaft being rotatable for effecting said control andbeing nonaxially moveable in said machine and also being exchangeable,said control shaft having depression means formed therein for each saidpawl, each said pawl comprising a control arm en gaging said controlshaft in the radial plane of the shaft containing the depression meanspertaining thereto, an annular permanent magnet for each needle bar,each magnet being positioned to hold the respective needle bar inretracted position when the pawl pertaining thereto is in the saidsecond position thereof, a guide rod being provided for each needle bar,said magnet being threaded on said rod, and a clamp nut to hold themagnet in adjusted position on said rod.

7. A shuttle embroidering machine according to claim 6 which includesmeans for manually controlling each needle bar independently of saidcontrol shaft.

8. In a shuttle embroidering machine; a plurality of needle barsreciprocable between retracted and working positions, a needle carriersupporting said needle bars independently of each other, a driving railfor driving said needle bars, a pawl on each needle bar having a firstposition wherein the respective needle bar is coupled to said drivingrail for reciprocation thereby and a second position wherein therespective needle bar is disengaged from said driving rail while inretracted position, a control shaft in the machine for controlling saidpawls, said control shaft being rotatable for effecting said control andbeing nonaxially moveable in said machine and also being exchangeable,said control shaft having depression means formed therein for each saidpawl, each said pawl comprising a control arm engaging said controlshaft in the radial plane of the shaft containing the depression meanspertaining thereto, means for manually controlling each needle barindependently of said control shaft, said means comprising a plungeradapted to engage the respective pawl and move it to the said secondposition thereof, a spring urging said plunger toward pawl engagingposition, and a cam lever on said plunger moveable to retract theplunger from pawl engaging position and hold the plunger in retractedposition.

9. In a shuttle embroidering machine; a plurality of needle barsreciprocable between retracted and working positions, a needle carriersupporting said needle bars independently of each other, a driving railfor driving said needle bars, a pawl on each needle bar having a firstposition wherein the respective needle bar is coupled to said drivingrail for reciprocation thereby and a second position wherein therespective needle bar is disengaged from said driving rail while inretracted position, a control shaft in the machine for controlling saidpawls, said control shaft being rotatable for effecting said control andbeing nonaxially moveable in said machine and also being exchangeable, athread guiding roller for each needle bar, a lever supporting eachroller and each tiltable to move the respective roller from a brakedworking position to an unbraked idle position, each lever having acontrol arm, and a second shaft engaged by said control arms andconstructed in conformity with said control shaft, said second shaftbeing provided with depressions for said control arms and beingrotatable and exchangeable.

10. In a shuttle embroidering machine operable by an advance program andhaving a frame; a needle carrier secured to the frame; journalling blockmeans fastened upon said needle carrier; a plurality of needle bar meansaxially shiftable independently of each other as journalled by saidblock means and which by way of the advance program are capable of beingshifted in or out of use at a time; spring loaded pawl means journalledon said needle bar means for the shifting in and out of use; aninterchangeable control shaft rotatably journalled in the frame of theshuttle embroidering machine and directly effective therewith relativeto said spring loaded pawl means journalled on said needle bar means; adriving rail means for driving the needle bar means capable of beingcoupled therewith for to and fro movement; each said pawl means beingembodied as a two-arm lever including one pawl arm for coupling withsaid driving rail means and a control arm which is directly pivotable byway of said control shaft provided with epressions 1n predeterminedlocations to allow coupling engagement of said control arm.

11. A shuttle embroidering machine according to claim 10, which includesleaf spring means journalled on said needle carrier, each said needlebar means in disengaged positioning thereof being adapted to be securedby said leaf spring means which has said one pawl arm engagingthereagainst in raised positioning under pressure.

1. In a shuttle embroidering machine; a plurality of needle barsreciprocable between retracted and working positions, a needle carriersupporting said needle bars independently of each other, a driving railfor driving said needle bars, a pawl carried by each needle bar having afirst position wherein the respective needle bar is coupled to saiddriving rail for reciprocation thereby and a second position wherein therespective needle bar is disengaged from said driving rail while inretracted position, and means for moving said pawls into and out ofengagement with said driving rail including a control shaft in themachine in engagement with said pawls for directly controlling the pawlon each needle bar, said control shaft being rotatable and having meansfor controlling movement of said pawls into engagement with said drivingrail for effecting said control.
 2. A shuttle embroidering machineaccording to claim 1 in which said control shaft has depression meansformed therein at differing angles of rotation for each said pawl, andeach said pawl comprises a control arm engaging said control shaft inthe radial plane of the shaft containing the depression means pertainingthereto.
 3. A shuttle embroidering machine according to claim 9 whichincludes a leaf spring adjacent each needle bar and spaced from the barwhen the pertaining pawl is in the said first position thereof andadapted to be moved into position to direct the respective needle bar,said pawl when moved to its said second position engaging said leafspring and moving it to needle bar arresting position.
 4. A shuttleembroidering machine according to claim 9 which includes a magnet foreach needle bar, each magnet being positioned to hold the respectiveneedle bar in retracted position when the pawl pertaining thereto is inthe said second position theReof.
 5. A shuttle embroidering machineaccording to claim 4 in which said magnet is an annular permanentmagnet.
 6. In a shuttle embroidering machine; a plurality of needle barsreciprocable between retracted and working positions, a needle carriersupporting said needle bars independently of each other; a driving railfor driving said needle bars, a pawl on each needle bar having a firstposition wherein the respective needle bar is coupled to said drivingrail for reciprocation thereby and a second position wherein therespective needle bar is disengaged from said driving rail while inretracted position, a control shaft in the machine for controlling saidpawls, said control shaft being rotatable for effecting said control andbeing nonaxially moveable in said machine and also being exchangeable,said control shaft having depression means formed therein for each saidpawl, each said pawl comprising a control arm engaging said controlshaft in the radial plane of the shaft containing the depression meanspertaining thereto, an annular permanent magnet for each needle bar,each magnet being positioned to hold the respective needle bar inretracted position when the pawl pertaining thereto is in the saidsecond position thereof, a guide rod being provided for each needle bar,said magnet being threaded on said rod, and a clamp nut to hold themagnet in adjusted position on said rod.
 7. A shuttle embroideringmachine according to claim 6 which includes means for manuallycontrolling each needle bar independently of said control shaft.
 8. In ashuttle embroidering machine; a plurality of needle bars reciprocablebetween retracted and working positions, a needle carrier supportingsaid needle bars independently of each other, a driving rail for drivingsaid needle bars, a pawl on each needle bar having a first positionwherein the respective needle bar is coupled to said driving rail forreciprocation thereby and a second position wherein the respectiveneedle bar is disengaged from said driving rail while in retractedposition, a control shaft in the machine for controlling said pawls,said control shaft being rotatable for effecting said control and beingnonaxially moveable in said machine and also being exchangeable, saidcontrol shaft having depression means formed therein for each said pawl,each said pawl comprising a control arm engaging said control shaft inthe radial plane of the shaft containing the depression means pertainingthereto, means for manually controlling each needle bar independently ofsaid control shaft, said means comprising a plunger adapted to engagethe respective pawl and move it to the said second position thereof, aspring urging said plunger toward pawl engaging position, and a camlever on said plunger moveable to retract the plunger from pawl engagingposition and hold the plunger in retracted position.
 9. In a shuttleembroidering machine; a plurality of needle bars reciprocable betweenretracted and working positions, a needle carrier supporting said needlebars independently of each other, a driving rail for driving said needlebars, a pawl on each needle bar having a first position wherein therespective needle bar is coupled to said driving rail for reciprocationthereby and a second position wherein the respective needle bar isdisengaged from said driving rail while in retracted position, a controlshaft in the machine for controlling said pawls, said control shaftbeing rotatable for effecting said control and being nonaxially moveablein said machine and also being exchangeable, a thread guiding roller foreach needle bar, a lever supporting each roller and each tiltable tomove the respective roller from a braked working position to an unbrakedidle position, each lever having a control arm, and a second shaftengaged by said control arms and constructed in conformity with saidcontrol shaft, said second shaft being provided with depressions forsaid control arms and being rotatable and exchangeable.
 10. In a shuttleembroideriNg machine operable by an advance program and having a frame;a needle carrier secured to the frame; journalling block means fastenedupon said needle carrier; a plurality of needle bar means axiallyshiftable independently of each other as journalled by said block meansand which by way of the advance program are capable of being shifted inor out of use at a time; spring loaded pawl means journalled on saidneedle bar means for the shifting in and out of use; an interchangeablecontrol shaft rotatably journalled in the frame of the shuttleembroidering machine and directly effective therewith relative to saidspring loaded pawl means journalled on said needle bar means; a drivingrail means for driving the needle bar means capable of being coupledtherewith for to and fro movement; each said pawl means being embodiedas a two-arm lever including one pawl arm for coupling with said drivingrail means and a control arm which is directly pivotable by way of saidcontrol shaft provided with depressions in predetermined locations toallow coupling engagement of said control arm.
 11. A shuttleembroidering machine according to claim 10, which includes leaf springmeans journalled on said needle carrier, each said needle bar means indisengaged positioning thereof being adapted to be secured by said leafspring means which has said one pawl arm engaging thereagainst in raisedpositioning under pressure.